Pressure control valve



Dec. 2K6, 1933.

H. ALBERTINE 1,940,932

PRESSURE GONTROL VALVE Filed July 14. 1930 Q0 34 llllllllllllll Patented Dec. 26, 1933 This invention relat Herman Albertne, Rutherford, N. J.,

Rogers Products Companylnc., a.

of New Jersey Pivrlszu'r OFFICE 1,940,932 PRESSURE CONTROL VALVE assignor to corporation Application July 14, i930. serial No. 467,139

4 claims. v(01251-5134) valve constructionI and more particularly hand control The present invention 1s 5to a lubricating system and valve which permit the passage other plastic sure.

proved arran valve whereby the said valve permits valve for high can be The invention also provides a new and es to a. new and improved toa pressure systems.

particularly adapted provides la control very easily manipulated to therethrough of grease or or fluid medium under high presi gement of parts for a hand control normal I holding the outlet thereof to be veniently attached to a connection leading the parts to be lubricated.

In accordance with a concrete exemplication of the present invention,

position of coninto

the internal valve elements of the control valve are held in selective means of a control lever having the operating end thereof pivotally mounted to of a swingable link and having at positions by the free end this pivoted to actuate said valve elements. fulcrumed on a res parts are arranged said lever is ber and the with the int end a projecting member adapted This lever is iliently mounted rod, and the so that when the handle of manipulated the projecting memlink become ernal elements of the valve.

substantially aligned The ' pressure of the material in the valve is transmitted through these internal elements to the manipulated these conditi control lever press the spring The pressure upon portion of this ransmitted along the length that only a negligible retakes effect upon the the control lever. Under ons, very little force is required to open the valve and still less to maintain the inactuated position. The manipulating pressure is about that required"to"c`om ward its normal position.

The invent original features of c tions of parts hereinafter se Although the novel features which are be.-

lieved to be characteristic 4of this invention will ion also consists in certain new be particularly pointed out in the app'e claims, the invention advantages, the mode manner of its organiza stood by referring to that urges the fulcrum rod toand onstruction and combinat forth and claimed.

nded

itself, as to its objects and of its operation and the tion may be better underthe following description taken in connection with the accompanying drawing forming Fig. 1 is a Fig. 2 is a side elevation of the control v left side elevation; and

a part thereof, in which alve:

Fig. 3 is an elevational section.

Like reference characters denote like parts in the several figures of the drawing.

In the following description and in the claims, parts will be identified by specific names for convenience, but they are intended to be as generic in their application to similar parts as the art will permit.

Referring particularly to the accompanying drawing, in which a specific embodiment of the invention is shown, there is provided a valve casing 10 having an inlet conduit 11, a parallel offset outlet conduit. 12, and a transverse, interposed valve chamber 13. Leading into the discharge outlet conduit 12 is a suitable air relief valve 14 70 and pivotally mounted on the casing 10 by means of pivot pins 15 are two swingable links 16 the top free ends of which are pivotally mounted on a control lever 17.

In order to provide means for fulcruming thel lever 17, the casing 10 is provided with a boss 18 having a bore 19 therethrough for the reception of a slidably mounted rod 20, on one end of which is pivotally mounted the fulcrum of the lever 17. Secured to the other end of this rod is a collar 21 which acts to limit the upward movement of said rod. Secured to said collar 21 is a guide pin 22 encircled by a coil spring 23, which serves to normally urge the rod 20 in its uppermost position.

The end of the lever 17 is provided with a projecting member in the form of an abutment screw 25 which passes through said lever, and which preferably has a smooth rounded portion 26 bearing upon the upper end of a slidable valve actuating element. The latter includes a plunger 27, one end of which has a threaded engagement with one end of a pin 28, the other end of said pin engaging a ball valve 30. This ball is a check valve normally engaging a valve seat 31, and is urged to closed position by the pressure of the fluid to be. controlled and by a coil spring 32. Interposed between the plunger 27 and the pin 28 is a leather cup washer 33 which is adapted to obvate the leakage of the grease through the side ofthe plunger 27. Access to these valve elements can be obtained by removing a plug 35 screwed into the end of the valve In the operation of this device, depression of the shank portion 34 of the central lever 17 forces the plunger 20 downwardly against the action of the spring 23 and plunger 27 downward against the pressure of the grease or other uid. When in this position, the abutment vscrew- 25 will be shifted into a substantially vertical 27 andthepln28will 110 be suiiciently depressed to disengage the ball 30 from contact with valve seat 31, thereby permitting the grease to pass through the valve. When in this open position, the abutment screw 25 will be substantially in the same plane with the plunger 27 and both sets of pivots l5, 15a and the force exerted by the grease on these valve elements will be carried by said links as a pure tension force, while the unbalanced upward thrust of spring 23 will be largely taken care of by friction of the movable parts, the remnant being only that necessary to lift lever 34, when the grip of the operator is relaxed. By means of this arrangement, the lever 17 is kept in an open position against the action of the spring 23 only, the rotational pressure influences exerted on said lever as a result of the internal valve pressure being resisted totally by the tensioned links 16.

It should also be noted that the inlet and outlet conduits are in substantially parallel axial relationship. By means of this arrangement, when the inlet conduit 11 and the shank 34 of the control lever are grasped into a holding position, the outlet conduit 12 will extend in a direction to permit its convenient attachment to a connection leading into the parts to be lubricated.

Although the invention has been described with particular reference to its adaptation to a lubrieating system, it is obvious that it can be adapted to the outlet control of any pressure system without departing from the spirit of the invention.

While certain novel features of the invention have been shown and described and are pointed out in the annexed claims, it will be understood that various omissions, substitutions and changes in the forms and details of the device illustrated and in its operation may be made by those skilled in the art without departing from the spirit of the invention.

I claim:

1. A valve including a valve casing, a valve element therein, a control lever having the operv ating end thereof cooperating with said valve element, and the medial portion thereof yieldably fulcrumed, means responsive to the actuation of said control lever about its yieldable fulcrum for shifting said valve elements into an open position, a pair of swingable links having one end thereof pivoted to said casing and the other end pivotally connected to the operating end of said control lever, said links being mounted so as to be shiftable into a position substantially aligned with the line of movement of said valve elements.

2. A valve including a valve casing, a valve element therein, a control lever having the operating end thereof cooperating with said valve element, a rod pivotally mounted at the fulcrumed point of said lever, means for guiding said rod in one direction, resilient means for urging said rod to a normal valve closing position, means responsive to the actuation of said control lever about its fulcrum for shifting said valve elements' into an open position, and means for withstanding the effect of the internal pressure of the valve so that said pressure will not affect the force necessary to maintain said control lever in an open position.

3. A valve including a valve casing, a valve element therein, a control lever having the operating end thereof cooperating with said valve element, a rod pivotally mounted at the fulcrum point of said lever, means for guiding said rod in one direction, resilient means for urging said rod in a normal valve closing position, means responsive to the actuation of said control lever about its fulcrum point for shifting said valve elements into an open position, and means whereby said control lever is maintained in closed position substantially against the actuation of said resilient means.

4. A valve including a valve casing, a valve element therein, a control lever having the operating end thereof cooperating with said valve element, a rod pivotally mounted at the fulcrum point of said lever, means for guiding said rod in one direction, resilient means for urging said rod in a normal valve closing position, means responsive to the actuation of said controlv lever about its fulcrum point for shifting said valve elements into an open position, a pair of swingable links having one end thereof pivoted to said casing, and the other end pivotally. connected to said control lever, said links being mounted so as to be shitable into a position to withstand the internal pressure of the valve when s'aid control lever is actuated whereby said internal pressure does not affect the force necessary to maintain said control lever in an open position.

HERMAN ALBER'I'INE. 

